... I found Lin's style of speaking very difficult to listen to. I appreciate the professionalism of the approach (if that's what it is), but if only by a small margin (perhaps 10-20%), I found her speaking too slow to the point that I wanted to skip forward constantly and would have found it difficult to pay attention to in person. :/

Perhaps this might be about the structuring of information as well (I'm familiar with much of what's being talked about). That said however, I've historically found that when listening to really good speakers, I find it easy to sit and have explained to me things that I already know well - so I'm not sure what's happening here.